Letters 108.14

And in truth, when he began to uphold poverty, and to show what a useless and dangerous burden was everything that passed the measure of our need, I often desired to leave his lecture-room a poor man. Whenever he castigated our pleasure-seeking lives, and extolled personal purity, moderation in diet, and a mind free from unnecessary, not to speak of unlawful, pleasures, the desire came upon me to limit my food and drink.

Seneca, Letters to Lucilius 108.14, translated by Richard Mott Gummere